Abstract: Apparatus for optimizing operation of an engine-driven vehicle.

Abstract: An apparatus to provide protection for electronic devices which receive power for their operation at least in part from a vehicle's electrical system and battery. The electronic device protecting apparatus has an electrical system voltage sensor, an engine start sensor, and an electronic device decoupler interconnected such that the electronic devices are decoupled from the electrical system and battery when the battery voltage drops below a predetermined level and when the engine is being started. The preferred apparatus allows the operator to select between a warning that system voltage is low and an automatic restart of the vehicle's engine and charging system. The apparatus further includes a bypass function to accommodate electronic devices which draw temporarily high current.

Abstract: An electronic device protecting apparatus and associated methods of manufacturing provide protection for electronic devices which receive power for their operation at least in part from a storage battery. In a preferred embodiment, an electronic device protecting apparatus has a battery voltage sensor, an engine start sensor, and an electronic device decoupler. The electronic devices are decoupled from the battery when the battery voltage drops below a predetermined level, and when the engine is being started.